Year
2016
Abstract
Typical personal dosimeters record accumulated dose through thin film interactions which is read out at a later time, such as with TLD and OSL dosimeters. Real time active detectors are not typically used for wearable personal monitoring, which may be due to size and weight, power consumption, and price. Thin film room temperature solid state detector materials may enable this and allow for real time, networked, wearable detection. We have been performing work on growth and optimization of thin film AlSb. This material has a band gap similar to CZT (~1.6 eV) but can be grown directly on silicon as part of an integrated circuit. Initial diode detector tests have been successful and improvements have been made in material resistivity and reducing intrinsic charge carrier density. Subsequent testing with improved materials will be performed. Materials development work and initial radiation tests will be discussed.